Axial Thrust Mechanism of Angular Momentum

Abstract

The present invention provides an angular motion axial thrust mechanism, which is applied to the testing field and includes a ball screw. One end of the ball screw is a spherical part, and the other end is a threaded rod. The diameter of the spherical part is larger than that of the threaded rod. A ball socket ring is arranged in cooperation with the spherical part. The part of the spherical part away from the threaded rod is in clearance fit with the ball socket ring. The ball socket ring is attached to a rotor equipped with a tooling through an air foot. The mechanism further includes an anti - detachment ring that limits the spherical part to prevent the spherical part from detaching from the ball socket ring. The threaded rod is installed on a fixed seat, and the fixed seat is stationary, so as to achieve axial stopping on the premise of fine - tuning the angle. The present invention can finely adjust the angle, ensure that the axial position remains fixed during measurement, the thrust direction remains unchanged, avoid generating torque on the rotor, and is beneficial to ensuring the quality of the rotor.

Description

Technical Field

[0001] The present invention belongs to the field of testing, relates to the measurement of the rotation of a rotor, and relates to an angular dynamic axial thrust mechanism. Background Art

[0002] The axial hard limit stop mechanism is a commonly used mechanism for horizontal rotor measurement. When operating the rotor measurement, the axial center line of the rotor must be aligned with the axis of this mechanism to achieve axial stop measurement. Due to the different reference shaft diameters at both ends of various engine rotors, this type of rotor mostly adopts the axial hard limit stop mechanism method: the operator needs to adjust the height of the supports at both ends of the measurement platform according to the reference shaft diameters at both ends of the rotor respectively. After reaching the predetermined position, fine adjustment is still required to make the axes at both ends horizontal, ensuring that the end faces of the rotor (connected with tooling) are in contact with the end face of the hard limit stop mechanism, so as to achieve rotor stop measurement. This method seems simple in operation, but through on-site practice, the end face of the rotor (connected with tooling) needs to be completely in contact with the end face of the hard limit stop mechanism to achieve the stop effect, and the fine adjustment is cumbersome.

[0003] The existing axial hard limit stop mechanism for rotors mainly has the following disadvantages:

[0004] 1) Angular adaptability: The stop mode of this mechanism is hard limit stop. Due to the different reference shaft diameters at both ends of various engine rotors, there is no micro-angle adaptability during rotor adjustment, which makes the adjustment process cumbersome. Moreover, if there is a slight angular difference at both ends of the rotor, the stop effect will deviate, increasing the measurement error;

[0005] 2) Measurement efficiency: Due to the different reference shaft diameters at both ends of some rotors, when adjusting the axis center, fine adjustment is required at both ends and the operation difficulty is extremely high, reducing the measurement efficiency. Summary of the Invention

[0006] The problem to be solved by the present invention is to provide an angular dynamic axial thrust mechanism, which can finely adjust the angle, ensure that the axial position remains fixed during measurement, the thrust direction remains unchanged, avoid generating torque on the rotor, and is beneficial to ensuring the quality of the rotor.

[0007] To solve the above technical problems, the technical solution adopted by the present invention is: an angular dynamic axial thrust mechanism, including a ball head screw, one end of the ball head screw is a spherical part, and the other end is a threaded rod, and the diameter of the spherical part is greater than the diameter of the threaded rod;

[0008] A ball socket ring is arranged in cooperation with the spherical part. The part of the spherical part far from the threaded rod is in clearance fit with the ball socket ring, and the ball socket ring is attached to the rotor equipped with tooling through an air foot;

[0009] It further includes an anti - detachment ring to limit the spherical part so that the spherical part does not separate from the ball socket ring;

[0010] The threaded rod is installed on a fixed seat which is stationary, so as to achieve axial stop on the premise of fine angle adjustment.

[0011] Furthermore, an adjusting ring is provided between the ball socket ring and the anti - detachment ring. The adjusting ring is arranged without contacting the spherical part, and the adjusting ring includes various specifications with different thicknesses.

[0012] Furthermore, an avoidance hole is provided on one side of the ball socket ring close to the spherical part, and there is a gap between the spherical part and the avoidance hole.

[0013] Furthermore, the number of the air feet is at least one. When it is set to one, it is arranged in the middle relative to the ball socket ring, and positioning holes are provided at the positions corresponding to the air feet on the ball socket ring.

[0014] Furthermore, the number of the air feet is multiple, and the multiple air feet are evenly distributed relative to the axis of the ball socket ring.

[0015] Furthermore, a regular polygon - shaped connecting hole is provided at one end of the threaded rod far from the spherical part for placing the end of a wrench during assembly.

[0016] Furthermore, a matching adjusting nut is provided on the threaded rod. By changing the position of the adjusting nut relative to the threaded rod, the axial length of the ball - head screw is adjusted. A locking nut is provided at one end of the adjusting nut close to the fixed seat to lock and stop the ball - head screw.

[0017] Compared with the prior art, the advantages and positive effects of the present invention are as follows.

[0018] 1. The present invention adopts an angular - motion axial - thrust mechanism, which realizes angular fine motion under the condition of meeting the stop - measurement state, adapts to the measurement requirements of multi - diameter rotors, and improves the measurement speed and efficiency of rotors while meeting the measurement requirements of multi - diameter rotors.

[0019] 2. The present invention is applicable to the measurement of rotor rotation. On the basis of thrust, it can finely adjust the angle, prevent the rotor from jamming during rotation, ensure that the axial position is absolutely fixed during measurement, and at the same time, the center coincides with the center of the workpiece. Even if there is a deviation tolerance in the positioning end face of the rotor, the thrust direction remains unchanged. The structure is simple, torque is avoided during the rotor test process, and the accuracy of the rotor is guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings forming a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0021] Figure 1 is a schematic structural diagram of the angular - motion axial - thrust mechanism of the present invention;

[0022] Figure 2 is a partial cross-sectional view of the application state of the angular motion axial thrust mechanism of the present invention;

[0023] Figure 3 is the present invention Figure 2 detail drawing of part A.

[0024] Reference numerals:

[0025] 1, ball socket ring; 11, avoidance hole; 12, positioning hole; 2, adjusting ring; 3, anti - detachment ring; 4, ball - head screw; 41, spherical part; 42, threaded rod; 43, connecting hole; 5, adjusting nut; 6, lock nut; 7, fixed seat; 8, air foot; 9, rotor. Detailed implementation manners

[0026] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0027] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation to the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise stated, the meaning of "a plurality" is two or more.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and defined, the terms "installed", "connected", "connected to" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood through specific situations.

[0029] The following will make a detailed description of the specific embodiments of the present invention with reference to the drawings.

[0030] As Figures 1 to 3As shown in the figure, the present invention is an angular motion axial thrust mechanism, which includes a ball head screw 4. One end of the ball head screw 4 is a spherical part 41, and the other end is a threaded rod 42. The diameter of the spherical part 41 is larger than that of the threaded rod 42, which is convenient for fixing the spherical part 41.

[0031] A ball socket ring 1 is arranged in cooperation with the spherical part 41. The part of the spherical part 41 far from the threaded rod 42 is in clearance fit with the ball socket ring 1. The ball socket ring 1 is attached to the rotor 9 equipped with a tooling through an air foot 8. The air foot 8 is a key component that provides aerostatic bearing support for the precision motion stage to ensure that the motion stage moves without friction on the platform (usually a marble platform). In this application, the ball socket ring 1 realizes frictionless movement relative to the tooling of the rotor 9.

[0032] It also includes an anti - detachment ring 3, which limits the spherical part 41 to prevent the spherical part 41 from detaching from the ball socket ring 1.

[0033] The threaded rod 42 is installed on the fixed seat 7, and the fixed seat 7 is fixed to achieve axial stop on the premise of angle fine - tuning.

[0034] Preferably, an adjusting ring 2 is arranged between the ball socket ring 1 and the anti - detachment ring 3. The adjusting ring 2 is not in contact with the spherical part 41. The adjusting ring 2 includes various specifications with different thicknesses, which can adjust the axial length of the adjusting screw, make up for the machining error, and improve the assembly efficiency.

[0035] Preferably, an avoidance hole 11 is arranged on one side of the ball socket ring 1 close to the spherical part 41. There is a gap between the spherical part 41 and the avoidance hole 11 to avoid excessive contact of the non - supporting part, reduce the machining accuracy of the parts. Since the mating parts are all ground, the processing cost is high. Reducing the machining surface can reduce the processing cost.

[0036] Preferably, the number of air feet 8 is at least one. When set to one, it is centered relative to the ball socket ring 1. A positioning hole 12 is arranged at the position of the ball socket ring 1 corresponding to the air foot 8 to achieve rapid positioning.

[0037] Preferably, the number of air feet 8 is multiple, and the multiple air feet 8 are evenly distributed relative to the axis of the ball socket ring 1 to ensure balanced force.

[0038] Preferably, a regular polygon connection hole 43 is arranged at one end of the threaded rod 42 far from the spherical part 41, which is used to place the end of the wrench during assembly for rapid positioning and fitting, and improve the assembly efficiency.

[0039] Preferably, an adjusting nut 5 is arranged on the threaded rod 42. By changing the position of the adjusting nut 5 relative to the threaded rod 42, the axial length of the ball head screw 4 is adjusted. A lock nut 6 is arranged at one end of the adjusting nut 5 close to the fixed seat 7 to lock and stop the ball head screw 4.

[0040] In the actual application process, by adjusting the ball socket ring 1, the adjusting ring 2 and the anti-detachment block, the ball head screw 4 can be finely adjusted in the angular direction and at the same time the axial movement of the screw is restricted. Then, the axial distance is adjusted through the ball screw nut, and after the adjustment is completed, the ball rod lock nut 6 is tightened to realize the stop measurement of the rotor 9. This angular and axial thrust mechanism is applicable to the measurement of the rotation of the rotor 9. On the basis of thrust, the angle can be finely adjusted to prevent the rotor 9 from being strained when rotating, ensure that the axial position is absolutely fixed during measurement, and at the same time the center coincides with the center of the workpiece. Even if there is a deviation tolerance in the positioning end face of the rotor 9, the thrust direction remains unchanged.

[0041] The above has described an embodiment of the present invention in detail, but the described content is only a preferred embodiment of the present invention and cannot be considered as limiting the scope of implementation of the present invention. All equivalent changes and improvements made according to the scope of the application of the present invention shall still fall within the scope covered by the patent of the present invention.

Claims

1. Angular motion axial thrust mechanism for measuring multi-diameter rotors, characterized in that: It includes a ball head screw. One end of the ball head screw is a spherical part, and the other end is a threaded rod. The diameter of the spherical part is greater than that of the threaded rod. A ball socket ring is arranged in cooperation with the spherical part. The part of the spherical part away from the threaded rod is in clearance fit with the ball socket ring. The ball socket ring is attached to the rotor equipped with a tooling through air feet. It further includes an anti - detachment ring to limit the spherical part so that the spherical part does not separate from the ball socket ring. The threaded rod is installed on a fixed seat, and the fixed seat is fixed to achieve axial stop on the premise of fine angle adjustment to avoid torque during the test rotation of the rotor. The number of the air feet is multiple, and the multiple air feet are evenly distributed relative to the axis of the ball socket ring.

2. The angular motion axial thrust mechanism according to claim 1, wherein: An adjusting ring is arranged between the ball socket ring and the anti - detachment ring. The adjusting ring is not in contact with the spherical part, and the adjusting ring includes various specifications with different thicknesses.

3. The angular motion axial thrust mechanism according to claim 1, wherein: A clearance hole is provided on one side of the ball socket ring close to the spherical part, and there is a gap between the spherical part and the clearance hole.

4. The angular motion axial thrust mechanism according to claim 1, wherein: A regular polygon connection hole is provided at one end of the threaded rod away from the spherical part for placing the end of a wrench during assembly.

5. The angular motion axial thrust mechanism according to claim 1, characterized in that: An adjusting nut is arranged in cooperation with the threaded rod. By changing the position of the adjusting nut relative to the threaded rod, the axial length of the ball head screw is adjusted. A locking nut is provided at one end of the adjusting nut away from the fixed seat to lock and stop the ball head screw.

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